lots of brands have cranking devices...just have to shop around see what works best. we have a parker bushwacker with a cocking device and its a little clunky setting up but it cranks very easy...I was trying to find what pounds it is to crank but I couldn't find it. My wife likes shooting it because she has had shoulder surgery on both shoulders and cant pull a regular compound bow and this device allows her to shoot as much as she wants. I know its no where near 30lbs to crank it...